Aphidius linosiphonis, Tomanovic, Zeljko & Starý, Petr, 2001

Tomanovic, Zeljko & Starý, Petr, 2001, Aphidius linosiphonis sp. n., a new member of the aphid parasitoid guild associated with Galium, Zootaxa 6, pp. 1-4 : 1-3

Aphidius linosiphonis sp. n. (Figs. 1­9)

Diagnosis. This species is very similar to Aphidius matricariae Haliday , in having a similar tentorial index and 14­15­segmented antennae. The most prominent differences from A. matricariae are the 4­segmented maxillary and 3­segmented labial palpi, elongate pterostigma, and slender first flagellomere (F1). The pterostigma is extremely elongate, 4.5­4.7 times as long as wide, and F1 is 3.0­3.3 times as long as wide. In contrast, A. matricariae populations have the pterostigma 3.5­4.0 times as long as wide, F1 2.5­3.0 times as long as wide, and 3­segmented maxillary and 2­segmented labial palpi ( Starý 1973; Pennacchio 1989; Mescheloff & Rosen 1990).

Female. Body length about 2 mm .. Eyes oval. Antennae 14­15­segmented (Fig. 1). First flagellomere (F1) subequal to second (F2), and 3.0­3.3 times as long as its median width (Fig. 2). Antenna moderately thickened at the apex. Setae on flagellomeres semierect. Middle flagellomeres about 2 times longer than wide. F1 without longitudinal placodes, and F2 with 1­3 longitudinal placodes (Fig. 2). Maxillary palpi 4­segmented (Fig. 3), labial palpi 3­segmented (Fig. 4). Tentorial index 0.35­0.40. Pterostigma elongate and slender, 4.5­4.7 times as long as wide and 1.2­1.3 times longer than metacarpus length (Fig. 5). First radial abscissa (R1) 1.4­1.6 times longer than the second R2. Central areola on propodeum wide and well defined (Fig. 6). Tergite 1, 3.0­3.2 times longer than its width at the level of spiracles, with prominent mediodorsal carina and 8­11 costulae on its anterolateral area (Fig. 7). Dorsal margins of the third valvulae clearly concave (Fig. 8), second valvulae slightly concave on dorsal margin.

FIGURES 1­9. Aphidius linosiphonis n. sp. 1, female antenna (lateral aspect). 2, base of antenna (lateral aspect). 3, maxillary palpus. 4, labial palpus. 5, forewing (R1­ first radial abscissa; R2­ second radial abscissa). 6, propodeum. 7, tergite 1. 8, third valvulae. 9, aedeagus.

1

pedicel brown, remaining parts of antenna brown. Thorax brown with yellowish prothorax and mesopleurae. Legs yellow with coxae and tarsi somewhat darker. Tergite 1 yellow. Third valvulae dark.

Male. Antennae 16­17­segmented. Tergite 1 2.7­2.9 times longer than its width at spiracles. Aedeagus stout (Fig. 9).

Etymology. The name of the new species is derived from its aphid host.

Holotype female: Yugoslavia, Mt. Tara ­ Derventa Canyon (type locality), 31.V.1998, reared from Linosiphon sp. on Galium silvaticum , coll. Z. Tomanovic. Holotype slide mounted and deposited in the Belgrade Natural History Museum, number 327/98.

Paratypes: 4 females and 11 males, same collection data, as holotype with 3 females and 4 males mounted on slides and 1 female and 7 males dry mounted. Paratypes deposited in the Belgrade Natural History Museum, numbers 328/98­342/98.

Other specimens and localities (deposited in the collection of P. Starý, Institute of Entomology, Èeské Budejovice): Czech Republic: Linosiphon galiophagum (Wimshurst) : Karlštejn, Bohemia centralis, 14.V.1958, on Galium silvaticum , mixed forest, sample 58/9, 3 females 1 male, coll. P. Starý; 27.V.1960, sample 60/107, 2 males, coll. P. Starý; 1962, sample 62/26, 1 female, coll. P. Starý; 20.V.1964, sample 64/20, 5 females, coll. P. Starý; 26.V.1964, sample 64/21, 2 females 2 males, coll. P. Starý; Hostýn, Moravia orientalis, 9.VI.1960, on Galium silvaticum , mixed forest, sample 60/292, 2 females 1 male, coll. P. Starý; Pouzdrany, Moravia merid. 4.VI.1960, on Galium silvaticum , sample 60/213, 1 female 1 male, coll. J. Holman. Slovak Republic: Belánské Tatry, Hviezdon lodge, 22.VI.1974, on Galium silvaticum , sample 74/175, 1 female, coll. P. Starý.